合成了一种超分子胶凝剂2,2,6,6-四甲基哌啶-1-氧基(TEMPO)取代的环己二胺衍生物,并探索了其优异的电荷传输能力。含有机溶剂和电解质的凝胶,或含离子液体的凝胶,是通过可逆的sol-gel相变在约200℃下形成的。50°C。有机凝胶在归因于TEMPO部分的E 1/2 = 0.72 V(vs Ag / AgCl)下显示出电化学氧化还原响应。甚至在准固态下,凝胶的电荷扩散系数也达到3.3×10 –7 cm 2 / s,与均匀溶液的电荷扩散系数相当(约10 –6)。较高的电荷传输能力导致大约1的超大电流密度(扩散受到限制)。在集电器上的电流为1.0 mA / cm 2,并且电荷转移的距离远超过有机凝胶厚度50μm。有机凝胶的半电池在E 1/2时具有平稳的输出电压,非常高的速率,几乎可以定量充放电,并且具有可循环性,而没有任何添加剂,例如导电碳和粘合剂聚合物。
An intermolecularanti-Markovnikovhydroamination of alkenes has been developed using triethyl phosphite and N-hydroxyphthalimide. The process tolerates a wide range of alkenes, including vinyl ethers, silanes, and sulfides as well as electronically unbiased terminal and internal alkenes. The resultant N-alkylphthalimides can readily be transformed to the corresponding primary amines. Mechanistic probes